/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/MeshOpPreviewHelpers.h
Stops any running computes and swaps in a different op generator. Does not update the preview mesh or start a new compute.
void ChangeOpFactory ( [UE::Geometry::IDynamicMeshOperatorFactory](API\Plugins\ModelingOperators\IDynamicMeshOperatorFactory) * OpGenerator )